X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 23 Feb 2009 18:16:31 -0500 Message-ID: X-Original-Return-Path: Received: from imr-d02.mx.aol.com ([205.188.157.40] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with ESMTP id 3511585 for lml@lancaironline.net; Mon, 23 Feb 2009 08:56:02 -0500 Received: from Sky2high@aol.com by imr-d02.mx.aol.com (mail_out_v39.1.) id q.ca0.4a616cef (39952) for ; Mon, 23 Feb 2009 08:54:51 -0500 (EST) From: Sky2high@aol.com X-Original-Message-ID: X-Original-Date: Mon, 23 Feb 2009 08:54:50 EST Subject: Re: [LML] Re: Ryan 9900B segue to ATD 300 X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1235397290" X-Mailer: AOL 9.1 sub 5003 X-Spam-Flag:NO -------------------------------1235397290 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en Egads Dom, something must be inverted! =20 Yes, my ATD-300 also sees a ghost ship at + or - 400 ft and 2 miles from=20 time to time. I don't get much nagging if the ghost ship lingers in about=20= the=20 same position. However, it does find intruders, forcing me the search the=20= sky=20 and I find something half the time (usually if it is in front of me,=20 otherwise I out run it). =20 The configuration is with the Xpdr antenna on the right wing tip bottom and= =20 the ATD antenna on the left wing tip. Both are connected with RG 400 cable,= =20 both about 18" outboard of the outside aileron bell crank rib. The Xpdr=20 Antenna had a 12" ground plane, the ATD has no ground plane. Both are wee=20= 600 Kt=20 Comant blades. The ATD antenna side has the pitot tube descending from the= =20 aileron bell crank access panel and this could provide "interference" betwe= en=20 the two antennas. Also, it was suggested that the prop may be causing a=20 signal reflection. =20 I used to have a 200 and its ATD antenna was mounted upright in the middle=20 of the hat shelf and that seemed to work OK - that is until a passenger was= =20 present, then it wouldn't detect much of anything in some quadrants. It wo= rked=20 even less well if the passenger was also a co-pilot. =20 One clear and sunny day, flying SE over Indiana at 5500 MSL, the ATD on the= =20 far setting announced "Traffic" at my altitude. A visual search didn't fin= d=20 anything until the 3rd or 4th warning, just before "Traffic Nearby", where=20= I=20 noticed a speck at my 2 o'clock. I stayed on the course and with visual=20 contact, noticing that the classic condition was developing - no movement o= f the=20 growing speck in the windshield. The other pilot must have never seen me.=20= =20 Just before the midair, I dove about 2 hundred feet, making it a near-miss=20 (almost hit, close by, whatever). Since I seldom look out the window, I ha= ve to=20 credit "the little darling" with a save. =20 =20 BTW, the ex WWII fighter pilot that ran the flight school I took my early =20 lessons from said that "... in a closing situation, don't do nutt'n 'til yo= u=20 see the whites of their eyes - you never know what the other idiot will do.= " =20 Uh, he had me tagged right. =20 Scott, AKA Grayhawk the wretched. =20 =20 In a message dated 2/23/2009 7:02:27 A.M. Central Standard Time, =20 domcrain@tpg.com.au writes: =20 Hiya Grayhawk,=20 Noting your poor man=E2=80=99s TCAS (Monroy ATD-300?) scrams =E2=80=9CTRAFF= IC NEARBY=E2=80=9D only=20 once or twice on LONG VFR trips gave me a head up.=20 Mine - the little darling =E2=80=93 gives it every few minutes. I snaps to=20= the panel=20 which reads =E2=80=9C0 - 0=E2=80=9D! No doubt reading my TXPDR.=20 When this happens over the GAFA (the Great Australian Flamin=E2=80=99 All),= sort of=20 a bit east of Fred Moreno, it wears a bit thin.=20 Short muting the thing, or turning the TXPDR to STBY, which defeats the=20 purpose, I wondered what magic you have to suggest.=20 Cheer mate.=20 Dom=20 VH-CZJ=20 **************A Good Credit Score is 700 or Above. See yours in just 2 easy=20 steps!=20 (http://pr.atwola.com/promoclk/100126575x1218822736x1201267884/aol?redir=3Dh= ttp:%2F%2Fwww.freecreditreport.com%2Fpm%2Fdefault.aspx%3Fsc%3D668072%26hmpgI= D %3D62%26bcd%3DfebemailfooterNO62) -------------------------------1235397290 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en
Egads Dom, something must be inverted!
 
Yes, my ATD-300 also sees a ghost ship at + or - 400 ft and 2= =20 miles from time to time.  I don't get much nagging if the ghost ship=20 lingers in about the same position.  However, it does find intruders,=20 forcing me the search the sky and I find something half the time (usually if= it=20 is in front of me, otherwise I out run it).
 
The configuration is with the Xpdr antenna on the right wing tip=20 bottom and the ATD antenna on the left wing tip. Both are connected wit= h RG=20 400 cable, both about 18" outboard of the outside aileron bell crank rib. Th= e=20 Xpdr Antenna had a 12" ground plane, the ATD has no ground plane.  Both= are=20 wee 600 Kt Comant blades.  The ATD antenna side has the pitot tube=20 descending from the aileron bell crank access panel and this=20 could provide "interference" between the two antennas.  Also, it w= as=20 suggested that the prop may be causing a signal reflection.
 
I used to have a 200 and its ATD antenna was mounted upright in th= e=20 middle of the hat shelf and that seemed to work OK - that is until= a=20 passenger was present, then it wouldn't detect much of anything in some=20 quadrants.  It worked even less well if the passenger was also a=20 co-pilot.
 
One clear and sunny day, flying SE over Indiana at 5500 MSL,=20= the=20 ATD on the far setting announced "Traffic" at my altitude.  A= =20 visual search didn't find anything until the 3rd or 4th warning, just=20 before "Traffic Nearby", where I noticed a speck at my 2 o'clock.  I=20 stayed on the course and with visual contact, noticing that the classic= =20 condition was developing - no movement of the growing speck in the=20 windshield.  The other pilot must have never seen me.  Just before= the=20 midair, I dove about 2 hundred feet, making it a near-miss (almost hit, clos= e=20 by, whatever).  Since I seldom look out the window, I have to=20 credit "the little darling" with a save. 
 
BTW, the ex WWII fighter pilot that ran the flight school I took my ear= ly=20 lessons from said that "... in a closing situation, don't do nutt'n 'ti= l=20 you see the whites of their eyes - you never know what the other idiot will=20 do."  Uh, he had me tagged right.
 
Scott, AKA Grayhawk the wretched.
 
In a message dated 2/23/2009 7:02:27 A.M. Central Standard Time,=20 domcrain@tpg.com.au writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>

Hiya=20 Grayhawk,

Noting your=20= poor=20 man=E2=80=99s TCAS (Monroy ATD-300?) scrams =E2=80=9CTRAFFIC NEARBY=E2=80= =9D only once or twice on=20 LONG VFR trips gave me a head up.

Mine - the l= ittle=20 darling =E2=80=93 gives it every few minutes. I snaps to the panel which r= eads=20 =E2=80=9C0  - 0=E2=80=9D! No doubt reading my TXPDR.

When this ha= ppens=20 over the GAFA (the Great Australian Flamin=E2=80=99 All), sort of a bit ea= st of Fred=20 Moreno, it wears a bit thin.

Short muting= the=20 thing, or turning the TXPDR to STBY, which defeats the purpose, I wondered= =20 what magic you have to suggest.

Cheer=20 mate.

Dom

VH-CZJ<= /o:p>

 <= /o:p>

 


A Good Credit Score is 700 or Above. See yours in just 2 easy steps! -------------------------------1235397290--